26478587 has 2 divisors, whose sum is σ = 26478588. Its totient is φ = 26478586.

The previous prime is 26478581. The next prime is 26478623. The reversal of 26478587 is 78587462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26478587 - 2⁶ = 26478523 is a prime.

It is a super-2 number, since 2×26478587² = 1402231139033138, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26478581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13239293 + 13239294.

It is an arithmetic number, because the mean of its divisors is an integer number (13239294).

Almost surely, 2^26478587 is an apocalyptic number.

26478587 is a deficient number, since it is larger than the sum of its proper divisors (1).

26478587 is an equidigital number, since it uses as much as digits as its factorization.

26478587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 752640, while the sum is 47.

The square root of 26478587 is about 5145.7348357645. The cubic root of 26478587 is about 298.0562743746.

The spelling of 26478587 in words is "twenty-six million, four hundred seventy-eight thousand, five hundred eighty-seven".